Leap Seconds

Some articles on seconds, second, leap seconds, leap second, leap:

Coordinated Universal Time - Mechanism
... UTC divides time into days, hours, minutes and seconds ... The number of seconds in a minute is usually 60, but may very rarely be 61 or 59 ... Thus, in the UTC time scale, the second and all smaller time units (millisecond, microsecond, etc.) are of constant duration, but the minute and all larger time units (hour, day, week, etc.) are of variable duration ...
Network Time Protocol - Leap Seconds
... UTC is subject to scheduled leap seconds to synchronize the timescale to the rotation of the earth ... When a leap second is added, NTP is suspended for 1 second ... Because NTP has no mechanism for remembering the history of leap seconds, leap seconds cause the entire NTP timescale to shift by 1 second ...
Unix Time - History
... as "the time since 000000, 1 January 1971, measured in sixtieths of a second" ... user will note that 232 sixtieths of a second is only about 2.5 years" ... to precisely define time_t in the face of leap seconds ...
Calculation - Gregorian Calendar From Julian Day Number
3 (this reduction occurs for the last day of a leap centennial year where c would be 4 if it were not reduced) subtract the number of days for this number of ... reduced to a maximum of 3 (this reduction occurs for the leap day, if any, where a would be 4 if it were not reduced) subtract the number of days for this number of ... To convert the fractional day into actual hours, minutes, seconds, the astronomical Gregorian calendar uses a constant length of 24 hours per day (i.e ...
Geotrekking - Accuracy Enhancement and Surveying - Timekeeping - Leap Seconds
... to match the rotation of the Earth, so it does not contain leap seconds or other corrections that are periodically added to UTC ... Atomic Time (TAI) (TAI – GPS = 19 seconds) ... As of July 2012, GPS time is 16 seconds ahead of UTC because of the leap second added to UTC June 30, 2012 ...

Famous quotes containing the words seconds and/or leap:

    At this very moment,... the most frightful horrors are taking place in every corner of the world. People are being crushed, slashed, disembowelled, mangled; their dead bodies rot and their eyes decay with the rest. Screams of pain and fear go pulsing through the air at the rate of eleven hundred feet per second. After travelling for three seconds they are perfectly inaudible. These are distressing facts; but do we enjoy life any the less because of them? Most certainly we do not.
    Aldous Huxley (1894–1963)

    The far-off clinching and mating of arches, the leap and thrust of the stone, carrying a great roof overhead, awed and silenced her.
    —D.H. (David Herbert)